Optical element for a helmet visor



FIG. 1 is a front elevational view of a first embodiment of an optical element for a helmet showing our new design, the rear elevational view is a mirror image thereof;

FIG. 2 is a perspective view thereof, shown in a used condition attached to a helmet visor;

FIG. 3 is a front elevational view of a second embodiment of an optical element for a helmet visor showing our new design; and,

FIG. 4 is front elevational view of a third embodiment of an optical element for a helmet visor showing our new design.

The broken lines shown in the drawings represent portions of the optical element for a helmet visor that form no part of the claimed design.

All surfaces not shown form on part of the claimed design. 

CLAIM We claim the ornamental design for an optical element for a helmet visor, as shown and described. 